Well, there are many other ways to look at the quantities of the aforementioned substances. It is vital for chemists to interpret an equation from every angle.
How to read an equation in terms of...
Numbers of atoms
The number and types of atoms in a formula's reactants make up each product; this means the number and types of atoms never change in a reaction.
Number of molecules
One molecule of nitrogen reacts with 3 molecules of hydrogen.
Moles of products & reactants
The coefficients of every product and reactant determine how many moles of each are present in an equation. For example, in the equation "2A -> B + 3C," two moles of A yield one mole of B and three moles of C. Do not mix up coefficients with subscripts, though; subscripts represent the number of atoms of a substance.
Mass
Law of Conservation - mass can be neither created nor destroyed in an ordinary chemical or physical process
Volume
Only for gases STP 1mol of any gas at STP occupies a volume of 22.4L
What's in an equation?
A balanced equation displays how much of each element is present in a formula's reactants and products. N2(g) + 3H2(g) -> 2 NH3(g), for example, tells us that one atom of nitrogen reacts with three moles of hydrogen to form two moles of ammonia. Simple enough, right?
Interpreting a balanced chem. eqn. (1).doc
Interpreting a balanced chem. eqn. (2).doc
Interpreting a balanced chem. eqn.(2 part 2).doc
Well, there are many other ways to look at the quantities of the aforementioned substances. It is vital for chemists to interpret an equation from every angle.
How to read an equation in terms of...
- Numbers of atoms
The number and types of atoms in a formula's reactants make up each product; this means the number and types of atoms never change in a reaction.- Number of molecules
One molecule of nitrogen reacts with 3 molecules of hydrogen.- Moles of products & reactants
The coefficients of every product and reactant determine how many moles of each are present in an equation. For example, in the equation "2A -> B + 3C," two moles of A yield one mole of B and three moles of C. Do not mix up coefficients with subscripts, though; subscripts represent the number of atoms of a substance.- Mass
Law of Conservation - mass can be neither created nor destroyed in an ordinary chemical or physical processOnly for gases STP 1mol of any gas at STP occupies a volume of 22.4L